Hi!
We were just flying in there under those conditions. Our alternate was Champaign, as nowhere near STL was the weather good. We 1st thought we would divert, as the Prevailing Vis was down to 1/4. It was also down to 1600 RVR for 12L (I think that's the parallel they were using).
The RVR held at 1800 for us. Just after the marker, they called it 1400. We are two pilots, and we both had a lot of experience, and it was still tough-should we divert (VERY bad for our customers), or should we shoot the approach vs. fuel to our alternate.
My Capt saw the applights right at DA, and I continued on instruments-got the runway about 100' and landed safely. *Then, during the taxi, ground cleared us right into an aircraft coming off 12L. Luckily, we both saw each other and stopped, otherwise we would've crashed on taxiways, if we'd both followed controller instructions.
I'm sure glad I wasn't single pilot-that would've sucked MASSIVELY.
Usually it's easy, but not always.
cliff
YYZ
PS-Just heard that NJA designates a number of airports as "Mountainous", and they do NO night ops at those airports. I think that's very smart!